Results 111 to 120 of about 23,622 (294)
Advanced Materials Interfaces, EarlyView.Volume changes of a solid‐state battery cell are separated into the individual contributions of anode and cathode. Simultaneously determining the “reaction volumes” of both electrodes requires a reference electrode with a pressure‐independent potential.
Mervyn Soans +5 more
wiley +1 more source
Complete centered finite difference method for Helmholtz equation [PDF]
Anais da Academia Brasileira de CiênciasA new approach in the finite difference framework is developed, which consists of three steps: choosing the dimension of the local approximation subspace, constructing a vector basis for this subspace, and determining the coefficients of the linear ...
GUSTAVO B. ALVAREZ +2 more
doaj +1 more source
A fast numerical method for a natural boundary integral equation for the Helmholtz equation
, 2009 A Neumann boundary value problem of the Helmholtz equation in the exterior circular domain is reduced into an equivalent natural boundary integral equation.
Sun, Ming-Bao, Li, Song-Hua
core +1 more source
Advanced Materials Technologies, EarlyView.Laser‐assisted synthesis enables rapid (within 1 h) and high‐yield (≥90%) production of Co‐MOFs with mesoporous structures, tunable magnetic and optical properties, and efficient adsorption of N2, CH4, and CO2 for low‐energy gas separation. DFT calculations elucidate the electronic structure and adsorption behavior.
Saliha Mutlu +10 more
wiley +1 more source
An inverse problem for Helmholtz's equation II
Inverse Problems, 1987 [For part I see ibid. 3, L 19-L 22 (1987; Zbl 0619.35109).] A method is given for recovery of n(z) and h(k) in \[ [\nabla^ 2+k^ 2n(z)]u=-\delta (x)h(k)\quad in\quad R^ 3 \] from the surface data.
openaire +2 more sources
Advanced Materials Technologies, EarlyView.This study shows that a lightweight blackbox neural network provides a practical, cost‐effective solution for bidirectional process prediction in laser‐induced graphene (LIG) fabrication. Achieving high predictive performance with minimal overhead, the approach democratizes machine learning (ML) for resource‐limited environments.
Maxim Polomoshnov +3 more
wiley +1 more source
Semi-analytic solution to planar Helmholtz equation
Applied and Computational Mechanics, 2013 Acoustic solution of interior domains is of great interest. Solving acoustic pressure fields faster with lower computational requirements is demanded.
Tukač M., Vampola T.
doaj
When Cubic is Not Isotropic: Phonon–Exciton Decoupling in CuInSnS4 Single Crystals
Advanced Optical Materials, EarlyView.A cubic CuInSnS4 crystal does not fully play by cubic rules. While phonons follow the average iso‐tropic lattice symmetry, the disorder‐localized excitons break away, showing strong, and reproduci‐ble polarization‐dependent emission. This work shows how intrinsic cation disorder can turn a mac‐roscopically cubic material into a source of hidden ...
Lara Kim Linke +11 more
wiley +1 more source
Numerical method for a Cauchy problem for multi-dimensional Helmholtz equation
Applied Mathematics in Science and EngineeringThe main focus of this research is to address the Cauchy problem of the multi-dimensional Helmholtz equation with mixed boundary conditions. This problem is known to be ill-posed according to Hadamard's definition.
Xianli Lv, Xiufang Feng
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High Order Transparent Boundary Conditions for the Helmholtz Equation
, 2017 : We consider finite element simulations of the Helmholtz equation in unbounded domains. For computational purposes, these domains are truncated to bouded domains using transparent boundary conditions at the artificial boundaries.
Lothar Nannen, Nannen, Lothar
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